47 citations · 49 across the 2 of their papers we have counts for
5 papers
Estimation of the magnetic critical exponent by Tensor Product Variational Approach
Andrej Gendiar, Tomotoshi Nishino, Rene Derian
A variational problem for three-dimensional (3D) classical lattice models is considered with trial state given by two-dimensional (2D) uniform product of local variational weights.…
Tensor Product Variational Formulation for Quantum Systems
Y. Nishio, N. Maeshima, A. Gendiar +1
We consider a variational problem for the two-dimensional (2D) Heisenberg and XY models, using a trial state which is constructed as a 2D product of local weights. Variational ener…
A Density Matrix Algorithm for 3D Classical Models
Tomotoshi Nishino, Kouichi Okunishi
We generalize the corner transfer matrix renormalization group, which consists of White's density matrix algorithm and Baxter's method of the corner transfer matrix, to three dimen…
One-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively
T. Tonegawa, T. Hikihara, T. Nishino +3
Ground-state and thermodynamic properties of the one-dimensional Heisenberg antiferromagnet in which two S=1/2 and two S=1 spins are arranged alternatively are studied by a quantum…
Numerical Latent Heat Observation of the q=5 Potts Model
Tomotoshi Nishino, Kouichi Okunishi
Site energy of the five-state ferromagnetic Potts model is numerically calculated at the first-order transition temperature using corner transfer matrix renormalization group (CTMR…